.video-box {
  width: 100%;
  position: relative;
}
.video-box video {
  width: 100%;
}
.video-box span {
  position: absolute;
  left: 20px;
  top: 10px;
  font-family: simsun;
  font-weight: 700;
  font-size: 20px;
  color: white;
}
.biref {
  padding: 25px 15px 20px 15px;
}
.biref h3 {
  font-size: 22px;
}
.biref p.main {
  position: relative;
  line-height: 40px;
  border-bottom: 1px solid #D7D7D7;
}
.biref p.main span {
  font-size: 18px;
  margin-right: 20px;
}
.biref p.main span a {
  color: #A3A3A3;
  font-size: 12px;
}
.biref p.main a.right {
  position: absolute;
  color: #A3A3A3;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}
.biref .user {
  margin-top: 20px;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
}
.biref .user img {
  width: 25%;
  border-radius: 50%;
}
.biref .user > div {
  margin-right: 40px;
}
.biref .user > div p {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
}
.biref .user > div span {
  font-size: 12px;
  color: #A3A3A3;
}
.biref .user a {
  width: 25%;
  line-height: 30px;
  color: white;
  text-align: center;
  background-color: #4294FF;
  border-radius: 15px;
}
.biref p.txt {
  margin-top: 18px;
  font-size: 15px;
  color: #A3A3A3;
  line-height: 20px;
}
.biref p.txt span {
  color: black;
}
.biref .test-box {
  margin-top: 25px;
  display: flex;
}
.biref .test-box .test-left {
  width: 50%;
  border-right: 1px dotted #A3A3A3;
}
.biref .test-box .test-left p {
  font-size: 14px;
  line-height: 35px;
}
.biref .test-box .test-left p span {
  font-size: 20px;
}
.biref .test-box .test-left > span {
  font-size: 12px;
  color: #A3A3A3;
}
.biref .test-box .test-right {
  padding-left: 25px;
  width: 50%;
}
.biref .test-box .test-right p {
  font-size: 14px;
  line-height: 35px;
}
.biref .test-box .test-right p span {
  font-size: 20px;
}
.biref .test-box .test-right > span {
  font-size: 12px;
  color: #A3A3A3;
}
.biref .button {
  margin-top: 25px;
  width: 100%;
  line-height: 50px;
  background-color: #4294FF;
  color: white;
  text-align: center;
  border-radius: 25px;
  font-size: 16px;
}
